Use our onlineĀ API Gravity Calculator.
API Gravity Formulas:
- API = (141.5 / SG) ā 131.5.
- SG = 141.5 / (API + 131.5).
where:
SG:Ā Specific Gravity (at 60oF).
API :Degrees API Gravity.
API Gravity Definitions:
Definition of API Gravity of water provided by WikiPedia:
The American Petroleum Institute gravity, or API gravity, is a measure of how heavy or light a petroleum liquid is compared to water. if its API gravity is greater than 10, it is lighter and floats on water; if less than 10, it is heavier and sinks.
API Gravity Definitions
APIĀ Gravity to Specific Gravity and Density Chart:
| Degree API. | Specific Gravity. | Density (kg/m3). |
| 7 | 1,022 | 1021,661 |
| 8 | 1,014 | 1014,337 |
| 9 | 1,007 | 1007,117 |
| 10 | 1,000 | 1000,000 |
| 11 | 0,993 | 992,982 |
| 12 | 0,986 | 986,063 |
| 13 | 0,979 | 979,239 |
| 14 | 0,973 | 972,509 |
| 15 | 0,966 | 965,870 |
| 16 | 0,959 | 959,322 |
| 17 | 0,953 | 952,862 |
| 18 | 0,946 | 946,488 |
| 19 | 0,940 | 940,199 |
| 20 | 0,934 | 933,993 |
| 21 | 0,928 | 927,869 |
| 22 | 0,922 | 921,824 |
| 23 | 0,916 | 915,858 |
| 24 | 0,910 | 909,968 |
| 25 | 0,904 | 904,153 |
| 26 | 0,898 | 898,413 |
| 27 | 0,893 | 892,744 |
| 28 | 0,887 | 887,147 |
| 29 | 0,882 | 881,620 |
| 30 | 0,876 | 876,161 |
| 31 | 0,871 | 870,769 |
| 32 | 0,865 | 865,443 |
| 33 | 0,860 | 860,182 |
| 34 | 0,855 | 854,985 |
| 35 | 0,850 | 849,850 |
| 36 | 0,845 | 844,776 |
| 37 | 0,840 | 839,763 |
| 38 | 0,835 | 834,808 |
| 39 | 0,830 | 829,912 |
| 40 | 0,825 | 825,073 |
| 41 | 0,820 | 820,290 |
| 42 | 0,816 | 815,562 |
| 43 | 0,811 | 810,888 |
| 44 | 0,806 | 806,268 |
| 45 | 0,802 | 801,700 |
| 46 | 0,797 | 797,183 |
| 47 | 0,793 | 792,717 |
| 48 | 0,788 | 788,301 |
| 49 | 0,784 | 783,934 |
| 50 | 0,780 | 779,614 |
Specific Gravity of Crude Oil:
They are many common crude types like west Texas, Brentā¦ API gravity is a measure of how light or heavy the crude oil compared Ā to water.Crude OilĀ LocationĀ API Gravity West Texas USA 40.2 Nacx1 Prop 39.4 Brent North Sea 39 Bach Ho Viet Nam 38.6 Eastex USA 38.2 Magllanes Chile 37.5 Sauces Argentina 35.9 West Texas Sour USA 35.3 Minas indonesia 35.1 Arab light Saudi Arabia 34 Gulf 1 PetroPlan 33.6 Isthmus Mexico 32.9 Kuwait Kuwait 32.4 Taching China 32.3 Oriente Ecuador 31.6 Forcados Nigeria 30 Arab Heavy Saudi Arabia 28.8 Cano Limon Colombia 31 Largo Treco Venezuela 27.7 Alaska USA 27.1 Tia Juana Med Venezuela 25.4 Shengli China 24.7 BCF-24 Venezuela 23.6 Maya Mexico 22.1 Wilmington USA 19 Bachaquero Venezuela 17.3 Boscan Venezuela 10.2
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ReferenceĀ : Ā Ā Api Gravity